Pumping means



March 14, 1944. J. L. CREVELING 2,344,287

PUMPING MEANS Filed March 15, 1939 2 Sheets-Sheet 1 Mimi;

IN VENTOR',

March 1944- .1. L. CREVELING PUMPING MEANS Filed March 15, 1939 2 Sheets-Sheet 2 INVENTOR:

Patented Mar. 14, 1944 UNITED STATES PATENT OFFICE Application March 15, (gli'itroiilasloljo. 261,937

10 Claims- My invention pertains to pumping means of a type which may be employed to maintain a substantially constant plus or minus pressure when driven from a suitable source of power and, as such means are particularly useful in connection with internal combustion engines as used in automobiles, my invention will be described with particular reference to an embodiment, especially useful for this purpose.

Automobile motors are now usually provided many also have a vacuum pump for assisting in operating the windshield wiper or other devices, my invention will be described with respect to a combined pressure and suction pumping means, although it will be obvious from the following that a motor casing and driven by an armor lever engaging the upper side of a cam within the engine or motor structure.

Fig. 11 is a section of a modified form of upper or fuel-carrying structure which may be used in connection with the other parts of the structure 02 Fig. I.

with a pressure pump for supplying fuel and, as

my invention may be used either for a plus or minus pressure device singly as well as for a combined structure.

As various engines or motors naturally vary materially in construction, it is now customary to design a pumping device for each type of engine. It is now common practice to fasten the pump to the side of the engine and drive it by means of a cam upon the usual cam-shaft which operates a lever or pushrod extending through the side of a portion or the engine and engaging a portion of the pumping mechanism.

While the most common types of pumping mechanisms are all quite similar, the locations of the cam-shafts in various engines differ considerably and the presence or other parts necessitates various positions of the pumps, requiring different types of connecting flanges, operating levers, etc., and requiring the inlet and outlet openings to face in diiferent directions.

An object of my invention is to provide a pump which may have its inlet and outlet openings readily positioned at any angle within a given plane, so that the same can be readily connected to the usual piping.

Another object is to provide pumping means with readily changeable driving means whereby a single type of pump structure may be adapted to be applied to and driven by a variety of engines having their driving members, such as cams, etc., in various positions requiring different types of power transmitting means or connections.

Other objects will be plain in view of the following speciflcation.

In the drawings, Fig. I is a section and partial elevation of a combined pressure and vacuum Fig. 111 is an elevation of the power transmitting means of Fig. I, with its carrying flange, as viewed from the right of Fig. I.

Fig. IV is a section of a part of the pump structure and a part of the flange of Figs. I and III, showing how they are united in Fig. I.

Fig. V is a section of a fragment of the body portion of the pump of Fig. I, and an elevation of the operating levers as viewed from the right.

Fig. V1 is a section of a portion of the pump of Fig. I, and a modified means for attaching the pump to the motor, and an elevation of a lever arrangement adapting the pump to be driven by contact with the lower face of a cam within the motor structure.

Fig. VII is an elevation of the structure of Fig. VI, as viewed from the right, and omitting the portions of the motor. structure.

Fig. VIII is a section of the flange to be attached to the pump structure as shown in Fig. I, and adapting the pump to be operated by a vertical push-rod within the motor structure.

Fig. IX is a section of a flange to be attached.

to the pump structure, and carrying means adapting the pump to be driven by a horizontal push-rod within the motor structure.

Fig. X is an elevation of the structure of Fig. IX, as viewed from the right.

. Fig. XI is an elevation of a flange arrangement, of the general type shown in Fig. VII, and a section of the pump structure of Fig. I as viewed from the left, the sections being taken on the line A-B in Fig. I (corresponding to line A-B in Fig. XIV).

Fig. XII is a section of a portion of the structure of Fig. XI, taken on the line 0-D and viewed in the direction of the arrow.

Fig. XIII is a similar section taken on the line E-F.

Fig. XIV is a section and partial elevation of a.

indicating a modifled type of driving connection, as well as a modified means for attaching the pump structure to the motor.

Fig. XVI is an elevation of a portion of the pump structure and driving means of Fig. XV, as viewed from the right.

Fig. XVII is a partial section and partial elevation showing a modification that may be made in the structure of Fig. XV.

Fig. XVIII is a partial section and partial elevation of a modification that may be made in the structure of Fig. XVII.

Fig. XIX shows a portion of the pump structure of Fig. XIV, both in section and elevation, having a lever adapted to operate the pump when driven in a direction opposed to that indicated in Fig. XIV.

Referring particularly to ig. I, l indicates a body casting having the upper flange 2,v lower flange 3, and side outlet flange 4 similar to those usually found in pumping devices of this character. The flanged member 5 is secured to flange 2 by screws, as shown, and clamps, between it and flange 2, the circular diaphragm 6. Member 5 is so formed as to define the cavity 'I having a port 6 connecting it with the annular channel 9, concentric with the upstanding hollow member or dome III, the interior of which is connected as by ports II with the annular channel i2. The annular member I3 is passed over the dome l having the same central axis, and is provided with the annular channels l4 and i which register with the channels 9 and I2, respectively. Channel i5 communicates with the outlet member l6, while channel 14 is connected as by ducts I! with the annular channel l6, which is connected by ducts 19 with the annular chamber 20, deflned by the dome l0 and the annular wall 2|, carried by the base member 22 having a concentric annular wall 23 and outer flange 24. The wall 23 carries the inlet member 25 communicating with the chamber 26. The member 5 is provided with an overhanging beaded flange 21, and a gasket 28 having openings registering with channels 9l4 and l2l5 is placed between members 5 and I3, while a gasket 29 with openings registering with the channel I8 is placed between member l3 and member 22. An annular ring 30 engages the flanged portion 24 of member 22, and is provided with three or more openings through which pass hooked members 3i engaging the beaded flange 21 and held in place by nuts 32. The top of dome I0 is provided with threaded rod 33 which extends through the cover 34 which is forced down upon the gasket 35 by nut 36. The cavity'l has its communication with the inlet port 8 and with the dome I 6 controlled by suitable valves, indicated merely by the discs 31 and 38, respectively. Such valves, in practice, are carried in suitable cages which also contain their operating springs; but, as the particular types of spring and cage structures pumping device cap: lie or operation by proper manipulation of the lever 4l--42 and, as will later be brought out, the valves are so arranged as to cause it to be a Pressure producing pump capable of supplying fuel to the carburetor of an internal combustion motor, but, as automobiles often require a vacuum pump as well, the lower portion of the structure of Fig. I is devoted to that purpose, so that both pumps can be operated by the same mechanical connection with the motor, while, of course, it is obvious that each could be driven separately, if desired.

The vacuum portion of the combined structures of Fig. I comprises an operating lever 44 with a vertical limb 46, similar to lever 4l-42, and is also pivoted at 43, as more plainly indicated as viewed from the right in Fig. V. Lever 44 is connected in the usual manner, as indicated, with the diaphragm 65 clamped between the flange 3 and member 46 forming the chamber 41, and having the depending portion 43 defining the annular pocket 49, containin the spring 50. and the concentric chamber 5|. The member 52 is provided with an annular channel 53 which communicates with the chamber 41 through the valve-controlled opening 54 and with the outlet connection 65. The chamber 41 communicates with the chamber 5| through the valved connection indicated at 56 and, through the openings in the spider 51, with the chamber 58 defined by the member 59, carrying the inlet member 60 communicating with the chamber 56. The spider 51 carries the threaded rod 6! passing through member 59 whereby the nut 62 may be used to draw the upper flange of member 59 and gasket 63 against the bottom of member 52 and thus force member 52 and gasket 64 against the lower face of member 46, the gasket 64 having an opening registering with outlet duct 54.

The flange 4 is attached to the adapter flange 66 as by screws 61, shown in Figs. IV and VII, which may b spaced as indicated in Figs. III,

VII and X at 68. The adapter carries the rocker arm 69 upon the pin I0, passing through the lugs II, and is shown as attached to a portion of the motor casing 12, as by studs I3 passing through holes 13 (Fig. III), and provided with nuts 14. The rocker arm 69 passes through the opening I5 in the engine casing and bears upon the upper side of the cam 16 carried by the shaft 11, which is usually a part of the motor structure as, for example, the usual valve cam-shaft. The arm 69 is provided with an upstanding portion 16, adapted to engag the members 42 and 45 to operate the levers 4| and 44, and is normally pressed against the cam 16 by the spring 19, held between its upper surface and the member which by engaging the end of 18 may limit the movement of the rocker arms 69-18, at such times as 69 is not engaging the cam '16.

An operation of the structure of Figs. I, III, IV and V, is substantially as follows: If the nuts 32 be loosened, the member l3 may be rotated about the central dome l0 until the outlet opening I6 faces in the proper direction for the particular environment in which the pump is to be used, since the ring 30 and hooks 3| are both free to rotate.about I II as a center. The inlet portion 26 may then be rotated to face in the proper direction and, it the nuts 32 now be screwed down tightly, the entire structure above the diaphragm "6 will be flrmly held in place and tight joints secured through the instrumentality of the g skets 23 and 29. The cover 34 may also be drawn down tightly upon the gasket 35, as by nut 36, so'as to seal the top of chamber 26. I1

held there by tightening the nut 62 which will secure tight joints by means of gaskets 66 and 64. The adapter flange is secured in place upon the flange 4 by means of screws 61, as above noted,

and a thin gasket is ordinarily placed between the two flanges, as indicated. The rocker arm 66 is inserted through opening 16 in the side of the motor casing and placed upon the cam 16, and flange 66 is passed over the studs 16 and firmly secured in place by nuts 14 against a thin gasket, as indicated. If the outlet i6 be now connected to the carburetor, as usual, and the inlet 26 connected with the fuel supply and the pump properly primed, chambers 26 and 26 will be filled with fuel, as also will be the annular channels 6- and I8.

Now, if the motor be started, shaft 11 will revolve and cam 16 will raise lever 69 and cause lever 16 to rotate levers 42-4l and 45-44 in a counter-clockwise direction. This will cause the diaphragm 6 to be drawn downwardly against the effort of spring 40, and the diaphragm 66 to be forced downwardly against the efiort of spring 50 until the cam 16 reaches its position of maximum throw, whereupon it will then approach the position of minimum throw, as shown in Fig. I.

The downward motion of diaphragm 6 will cause fuel to flow from channel 9l4, through port 6 and around valve 31 into chamber 1, and this fuel will be replaced in channel 9-44 from the supply in chamber 20, through ducts IS, annular channel It, and ducts II. This will be replaced by fuel from chamber 26 which, in turn, will be replaced byfuel entering the inlet 26 from the fuel supply tank, which is assumed to be open to atmospheric pressure. The lower portion of chamber 26 will serve to collect any solid particles of foreign matter that will be dropped by the incoming fuel and, if desired, a screen, as indicated at 34 may be placed over chamber 20 to further protect against foreign matter being drawn into chamber I.

When the cam 16 revolves from its position of maximum throw into the position shown in Fig. I, spring 19 wil cause the lever 69-18 to revolve in a clockwise direction, and lever 42-4| will tend to follow it under the influence of spring 46 and tend to force some of the fuel above the diaphragm 6 beyond the valve 38 and into the dome in where it will compress the air in the upper part of the dome and tend to flow out through ports Ii, channel l2l5 and outlet l6, to the carburetor. As these pumps ar designed to have a pumping capacity quite in excess of the fuel consumed under normal operating conditions, the back pressure due to the action f the carburetor valve will prevent the expulsion of m11ch of the fuel above the diaphragm between revolutions of the cam 16, with the result that lever 42 only follows the lever 16 for a short distanceduring each revolution of th cam, with the outcome that the fuel is supplied to the carburechamber 41, from which return is prevented by the valve indicated over port 66: while downward motion of the diaphragm causes air to be expelled from chamber '41 through thevalved port 64. Therefore, when the diaphragm 66 is operated, as explained with respect to the fuel diaphragm 6, a partial vacuum is maintained in the chamber 66 which may be utilized in a manher now well known in the art.

Prior to my invention, it has been the practice to make pumps of the character illustrated in Fig, I, with the operating arms, corresponding to lever 66, permanently arranged upon the, same pivot as the levers corresponding to "-42 and 44-46, and to operate the last-mentioned levers through a permanently arranged, lost-motion, connection with the levers or arms 66, all the parts being properly related and proportioned with respect to the location and throw of the cam 16, of the particular motor-for which the pumping means was designed. It has also been the practice to provide the flange, corresponding to 4 in Fig. I, with permanent ears or extensions through which the studs 13 or suitable cap screws were passed. Thus, a pump was applicable only to a motorof the particular construction for which it was designed, or one having the same arrangement of pump-attaching and driving elements.

With the pump of Fig. I, it will be plain that the adapter flange 66 and parts carried thereby are all that have to be varied to meet therequirements of different motors, so that the same pump can be installed upon and operated thereby. 'I'herefore, dealers or repair shops only have to carry one type of pump and suitable adapters to service a large variety of cars, whereas they have previously had to carry a large variety of complete pumps for the service.

With an adapter flange of the type shown in Figs. I and III, the lever 66 can, of course, be

. bent or ground so as to provide some adjustment tor at substantially constant pressure determined by the spring 40, in a manner now so well known in the art as to require no further explanation.

While the above operation is taking place, a

' similar operation is being brought about by lever 44-45 which operates the diaphragm against the effort of spring 60. Upward movement of diaphragm 65 causes air to be drawn through inlet 66, chamber 56,

to accommodate differences in location of the cam 16 and also, on account of the lost motion that may be caused between 42 and 16, to vary the proportion of the throw of the cam to be transmitted to the lever 42; but, with this particular type of solid fla the holes 13* for the studs 13 have to be properly positioned for the particular location of the studs in the engine frame. of course, complete flanges 66 with appropriate levers to fit most motors (another type of which is indicated in Fig. X, to be described later) can be carried in stock much more easily than complete pumps, and this arrangement is a vast improvement over present day structures.

However, a modified form of adapter is shown in Figs. VI and VII, wherein the flange 6| carrying the operating arm 62 is circular and provided with a ring or flange 63, which is provided with the holes 64 for engaging the studs on the motor casing. With this arrangement, only the ring flange 66 has to be changed to accommodate different spacing of the studs which, if properly spaced and diametrically opposite each other can be engaged, regardless of the particular diameter, as the ring 66 may be revolved about the flange 6 I In Figs. VI and VII, the studs are assumed to be on a horizontal diameter and, therefore, do not show in Fig. VI; while it will be obvious that drawing the ring flange 66 toward the casing 12, by means of the usual nuts upon proper studs, will clamp the flange 6| flrmly against the motor chamber ii and port 66 into casing 12 so as to hold the pump firmly in place,

a thin gasket usually being placed flange 3| and the case 12.

In Figs. VI and VII, the arm 02 is of the type employed for engagement with the lower race of the cam 05 against which it is held by the spring 36, while its limit of travel when disengaged from the cam is determined by the pin 31 in slot 38. With this arrangement, when the cam 35 is in the position of minimum throw, as shown in the drawings, the lever 42 of th pump is in the position indicated in, Fig. I; and it will be plain that, as the cam moves to its position of mainmum throw, it will rotate the arm 02 in a clockwise direction about its pivoth89, carried by the flange BI, and thus move the lever 42 to operate the pump, as explained with respect to Fig. I.

Besides motors requiring their pumps to be operated by arms engaging the upper or lower face or a cam, there are in use a great many motors having pumps operated by a vertical push-rod, as shown at 30 in Fig. VIII, and by horizontal pushrods as shown at Si in Fig. IX. These push-rods operate in constant alignment and, in Fig. VH1, there is shown an adapter flange by means of which the pump of Fig. I may be operated by a vertical rod. The flange 93 may be attached to the flange 4 of Fig. I and properly held against the side of the motor, as shown in Figs. I and VI, and upward motion of the push-rod will then cause the lever 94-05, pivoted at 06, to move the lever 42 to operate the pump, as described with respect to Fig. I. Spring 91 will keep the pushrod in contact with its cam.

In Figs. IX and X, the adapter flange 98is shown as of the integral type illustrated in Figs. I and III, merely to indicate how this type may be varied for use with a diflerent arrangement of studs upon the motor casing, and, of course, the type of ring flange shown at 8I--83, in Figs. VI and VII, could be quite as well employed. With this arrangement, the member 99 is of such dimensions as to engage the end of the push-rod SI and cause proper operative relation between therod and lever 42, and is supported by the leaf-spring I00 which holds the rod 0i against its cam.

In Fig. II. the flange IOI corresponds to the flange of Fig. I and carries disc I02, provided with the annular wall I03 and dome I04, which is provided with a central outlet tube I05 which extends to a point in the lower part of the dome and which may be secured thereto as by threads.

between the as indicated at I06, which are preferably sweated I in permanent position. I0! is a cap which is passed over the tube I05, and provided with bottom flange I08, adapted to engage the gasket I03 and form a tight joint with the member I02 when I forced downwardly by nut I I0 which is threaded upon the tube I05. The upper end of tube I05 is provided with a union of a well type having an outlet member III which is free to revolve about the axis of the tube I05 until cap nut H2 is firmly screwed down, when outlet member III is flrmly held in place and in communication with the tube I05. I I3 indicates an inlet opening corresponding to of Flg. I. The chamber II4 communicates with the cavity 1, as by port II5, provided with a suitable valve, as indicated in its open position at I IS. The interior ot the dome I04 is connected with the cavity 1 as by the valved port II1.

It'will thus be plain that, if flange MI and the parts carried thereby be substituted in the structure of Fig. I for the flange 5 and parts carried thereby, and the diaphragm operated as 75 described with respect to Fig. I, the operation of the pump will be substantially as described with respect to Fig. I, and that the inlet opening III may be faced in any desired direction in a horizontal plane and thus held by nut H0, and that the outlet I II may also be positioned at any angle in a horizontal plane and held in place by nut II2.

In Figs.v XI. XII and H11, there is shown a flange arrangement similar to that shown in Figs. VI and VII, differing principally in that the flange 4 is attached to the adapter flange II! by studs II3, which are fastened in the adapter flange H9, and which flange may be of the same character as the adapter flange si 01 Fig. VI and VII. The flange 4 is shown as provided with perforated lugs I20, through which the studs III pass, and the. nuts serve to draw the flanges 4 and II! together in place of the screws 51 oi. Figs. VI and VII. The ring flange I2I is shown as having grooves therein registering with the lugs I20, which may serve to hold the flange 4 from revolving in the flange I2I, if desired,

In Fig. XIV, there is shown a pressure and vacuum pumping structure similar to that shown in more detail in Fig. I, and diflfering therefrom principally in that the upper or iuel supply portion differs indetails 0! construction and in that the structure does not employ an adapter flange as used in the previously mentioned structures. This flgure also shows another means for attaching the pumping structure to the motor. The parts .here shown in elevation and bearing the same numerals as in Fig. I have the same internal arrangement as shown in section in Fig. I.

In this figure, the flanged member I22 is provided with the annular channel I23 communicating with the chamber I through the valved port I24, and has the dome I25 and outlet tube I26 of such construction that they may be cast integrally therewith. The shell I21, having upstanding walls I28 and I23, has its lower portion provided with an annular channel I30 which communicates with the chamber I3I, as by ducts I32. The wall I28 is provided with the inlet connection I33, and the dome is provided with a valved connection with the chamber 1, as indicated at I34. The hood I rests upon the top of wall I28 and may be drawn down tightly as by nut I36. The tube I25 is connected with the union III-I I2, which is the same as shown in Fig. 11, and the operation of the structure thus far described will be obvious from the description of the arrangement of similar parts of Figs. I and II.

In the structure of Fig. XIV, the levers I31 and I38 correspond to levers 4| and 44 of Fig. I, respectively, and operate the pumping devices in the same manner. Levers I31 and I38 are both pivoted at I39 and are provided with upstanding portions I40 and HI and with like horizontal extensions, one only of which may be seen in the drawings at I42. The horizontal extensions are engaged by the lever I43, carried by the pivot I44, supported by lugs I45, which in turn are carried by the flange 4. Lever I43 is connected with arm I 46 which is held in contact with cam I41 as by spring I48, so that revolution of the cam I41 operates levers I31 and I38 to operate the pumping structures, in a manner that will be plain in view of the description-o1 the operation of the structure of Fig. I. With this structure, it it be desired to drive from a cam so positioned that it is necessary to place the driving arm upon the upper face, or in such position that the arm receives counter-clockwise movement for its operating stroke, the pin I44 may be withdrawn and the arm I45 replaced by an arm 01' the type shown in Fig, XIX at I49, provided with the extension I56 engaging the levers I40 and I.

To adapt this structure for use with a vertical push-rod arrangement, as shown in Fig. VIII, it is only necessary to have a suitable arm which may be substituted for the arm I49 I50, while the horizontal push-rod II of Fig. 1x may operate the levers I40-I4l directly. The means for holding the pumping structure against the motor casing, shown in this figure, comprises a ring flange III which is provided with suitable holes to engage the studs 13 in the casing 12, and with an opening I52 just large enough to pass over the flange 4. Then, 11 a proper flange I be selected to fit the studs, it simply has to be passed over the flange 4, and two half rings of the section indicated at I53 placed upon the flange 4, and the flange I5I drawn toward the right into the position shown in the figure, and the entire structure can then be held firmly against the casing 14, as by studs 13; it here being noted that the ring I53 is not shown in section as the half ring is assumed to show in elevation at the Joint. I

In Figs. XV and XVI, the flange I54 is of the same general type as that of Fig. XIV, but the flange I55 corresponding to 4 in the other figures, has one 01' its faces beveled so as to fit against one side of the ring of square section, the two ends of one-half of which are shown at I55, the flange I54, of course, having its inner face shaped to fit against the opposite face of the ring I56. Here,

the levers I51 and I58 are similar to the levers 4I and 44 of Fig. I, and operate the pumping apparatus in the same manner. The levers I51 and I55 are pivoted at I59 and are provided with the upstanding arms I60 and I6I which engage the rocker I 52, carried by the member I53, provided with parallel side members, one of which is shown at I64. The members I64 are united by the cross members I55 which is held in position by the tail rod I55, movable in the guide hole I51. The structure I62I65-I64I55is pressed toward the right by spring I65 into constant contact with the lever I69, pivoted at I10, and provided with the cam engaging arm I, in such manner as to hold the arm in contact with its operating cam (not shown), in a manner plain from the description of the structures of Figs. I and XIV. Thearm "I may be of any type adapted to be moved by its cam in a counter clockwise direction as, for example, those shown in Figs. I and VIII; and, if the pumping apparatus is to be driven by a cam moving its arm in a clockwise direction, it is only necessary that a proper arm be provided, as indicated in Fig. XVII at I15, which will have the arm I14 properly disposed below the pivot I10. With this structure, the member I63 may be caused to operate the pump by direct contact with horizontal push-rods, such as shown at SI in Fig. IX.

In the structure of Fig. XVII, the parts bearing the same numerals are the same as in Figs. XV and XVI, but have a different location with respect to the flang 4. Here the lever I14I15 is pivoted between the flange '4 and the member I53, and is shown as of the type tobe moved in a clockwise direction for its operating stroke by the cam (not shown). It the operating arm is to have its operative stroke in the opposite direction, it has simply to be reversed upon the pin I or an appropriate arm or the type indicated at I55-I1I, in Figs. IV and XVI. substituted in its stead.

If the structure of Fig. XVII is to be driven by a horizontal push-rod, as shown at 5i in Fig. XVIII, the pin I16 has only to be provided with a proper member, as indicated at I11 in the latter-named figure, or a push-rod oi. the proper length substituted for the rod indicated at II.

I do not hereby limit myself to any of the details of construction or modes of operation herein given to illustrate embodiments of my invention, for it will be obvious that wide departure in the way of details, both in construction and operation, may be made without departing from the spirit and scope of my invention, which is as set forth in the following claims:

I claim:

1. Pumping means including fluid pressure varying means, a lever for operating said varying means, a pivot supporting said lever, an element extending upon opposite sides of said pivot adapted to transmit motion to said lever and causing said lever to move in a single direction when said element is moved by pressure applied to said element in the same linear direction on either side of said pivot.

2. Pumping means for use with driving means, including fluid pressure varying means, a lever for operating said varying means, a pivot supporting said lever, an element having portions upon opposite sides of said pivot adapted to transmit motion to said lever and causing said lever to move in a single direction when said element is moved by pressure applied to said element in the same linear direction on either side of said pivot, and means for operatively connecting said element with the driving means.

3. Pumping means for use with driving means, comprehending a readily attachable pumping unit including an operating lever, means for supporting said lever, a second lever for operating the first lever and engaging the driving means, and independent means provided with a pivot for supporting said second lever in operative relation to the first lever and a driving means.

4. Pumping means including a pump having inlet and outlet openings in portions of said pump which are in contact with each other and movable with respect to each other and the remaining portions of said pump combined with a common element simultaneously holding said portions in fixed relative positions.

5. Pumping means having a body portion including a pump, a portion having an inlet to said pump, a portion having an outlet from said pump, all said portions being movable with respect to each other, and a single element for holding all said portions in fixed operative relation and without removal permitting relative movement therebetween throughout a complete revolution.

6. Pumping means having a body portion in cluding a pump, a portion having an inlet to said pump, a portion having an outlet from said pump. all said portions being movable with respect to each other, and common means extending through one of said portions for simultaneously clamping and holding all said portions in fixed operative relation.

7. In a device pf the character described, a body portion including a pump, a member provided with an inlet opening in operative connection with said pump, a member provided with an outlet opening in operative communication with said pump, means permitting independent movement of each of said members into an indefinite number oi positions to facilitate connection of their openings with inlet and outlet piping, said last-named means being adapted upon manipulation to hold said memberssin fixed position a with respect to said pump with their openings in operative connection with said pump and said piping, operating means for saidpump carried by said body portion, separate readily attachabledetachabie means for engaging the body portion -and supporting the body portion and piping and provided with means for operatively connecting said operating means with a powerdriving means, whereby said last-named means may cause fluid to be drawn from said inlet piping and elected through said outlet piping.

with inlet and outlet openings for connection with inlet and, outlet piping. operating means for said pump comprising a lever, a pivot carrier by the pump for supporting said lever, readily removable means attached to said pump for supporting a second pivot, a second pivot supported by 'said last-named means, a lever removably supported by the second pivot for operatively engaging the tirst-named lever and the movable element whereby saidlever may be replaced by any one of a number of interchangeable difl'erent levers, whereby the lever may be chosen with respect to the pumping device and the movable element and readily engaged by said pivot and held in operativeposition by said pivot.

10. Pumping means for use with a driving means, including fluid pressure varying means and a pivotal lever for operating the pressure varying means in constant operative connection therewith, combined with readily attachable means provided with a pivot and a lever upon said pivot for intermittently contacting and operating the first-mentioned lever and for constantly engaging a driving means.

JOHN L. CREVELING. 

